Drill-mounting.



F. L. EMERSON.

DRILL moumme.

APPLICATION FILED SEPT-30, 1915. 1,214,527. Patented Feb. 6,1917.

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DRILL MOUNTING. APPLICATION. man sumac. 19:5.

Patentd Feb. 6,1917.

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F. L- EMERSON. DRILL moumme.

Patented Feb. 6, 1917.

APP LlCATION FILED SEPT-30, $915.

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@NTTED TATE PATENT @FFTQE.

FRED I4. EMERSON, OF DENVER, COLORADO, ASSIGNOR TO THE DENVER ROCK DRILL MANUFACTURING COMPANY, OF DENVER, COLORADO, A CORPORATION OF DELA- WARE.

DRILL-MOUNTING.

Application filed September 30, 1915. Serial No. 53,349.

To all whom it may concern:

Be it known that I, FRED L. EMERSON, a citizen of the United States, residing at Denver, in the county of Denver and State of Colorado, have invented new and useful Improvements in Drill-Mountings, of which the following is a specification. I

The present invention relates to mountings for drills, and more particularly to the means for securing rock drilling machines to columns, column arms, or the like.

The primary object of the present invention is to provide a device of this kind, by means of which a lateral, as well as a lineal adjustment of the drilling machine can be readily effected with respect to the hole being drilled. As is well known, much time is often lost in changing drill bits when it is diflicult to get the bits past the side of the machine in removing and replacing them. This is especially so with the larger types of drilling machines now in general use. It has also heretofore been the common practice to loosen the saddle and move the machine in or out on the column arm or shaft bar when the drill bit was binding in the side of the hole. It furthermore happens quite often that the column or shaft bar is set too close or too far away from the rock to use to the best advantage the change of bits provided. With the present device, a quick change of bits can be readily made without the necessity of altering the position of the saddle or mounting on the column arm or shaft, and when the bit is binding in the hole, a quick alinement can be effected. Furthermore in case the column or shaft bar is not at the proper distance from the rock, an adjustment of the drilling machine can be quickly made without the necessity of altering the position of the column.

A preferred embodiment of the invention is illustrated in the accompanying drawings, wherein Figure l is a top plan View of the mounting. Fig. 2 is a vertical sectional View 'therethrough. Fig. 3 is a bottom plan view of the drill-holding member. Fig. 4 is a top plan view partially in section of the upper clamp or support engaging member. Fig. 5 is a side elevation of the device, but illustrating the drill holding member reversed from the position shown in Fig. 2, in order to indicate the range of adjustment Specification of Letters Patent.

, that can be obtained. Fig. 6 is a rear elevation of the device with the parts as shown in Fig. 2.

Similar reference numerals designate corresponding parts in all the figures of the drawings.

In the embodiment illustrated, a column arm or shaft is shown at 7, and may be any well known type of support. Engaged with this support is a clamp comprising an upper member 8 and a lower member 9 having recessed portions 10 and 11 to receive said support 7. Bolts 12 connect the members on opposite sides of the support 7 and serve to secure the clamp in fixed relation upon said support in a manner well understood. The upper support engaging member 8 is chambered as shown at 13, said chamber opening through the top of the member and being surrounded by an upstanding ring seat 14, the outer face of which is tapered upwardly and inwardly, as shown at 15, while the inner face is vertical or perpendicular as shown at 16.

Rotatably mounted on the member 8 is a drill holding member 17 This member is provided in its under side with a circular groove 18 that receives the ring seat 14, the outer wall of the groove being tapered as illustrated at 19 to correspond to the face 15, while the inner wall of the groove is vertically disposed, as shown at .20 to correspond to the inner face 16 of the ring seat. This groove thus produces a boss 21 that fits within the upper portion of the chamber 13, and said boss has a central opening 22 therethrough, communicating with a socket 23 formed in the member 17.

A clamping bolt 24passes through the opening 22, and has a circular head in the form of a nut 25 threaded upon its upper 'end and located in the socket 23. This nut is held against rotation by a key pin 26 engaged therewith and with the bolt 24, as shown more particularly in Fig. 1. The lower end of the bolt 24 is located in the chamber 13 of the member 8 and has a pivotal connection 27 with an operating bolt or lever 28 arranged in the chamber 13 and pivoted therein as shown at 29. This bolt projects through an opening 30 formed in one wall of the chamber 13, its projecting end being threaded and having thereon a nut which bears against a washer 32 "interposed between the nut and chine, a portion of such base being shown at 34. This seat on one side is provided with a stop wall 35' undercut, as shown at 86' to receive the base flange. In order to seeure the base in place, a clamping block 37 cooperates with the seat, and is disposed diametrically opposite to the eentral portion of the stop wall. This block has an opening 38, through which is passed a holding bolt 39, the outer end being threaded to receive a binding nut 40 and a washer 41' being interposed betweenthe nut l0 and block. i The inner portion of the bolt lies in a recess or oo e Qiwm d n th o tom f the S and its in'neriend is in the form of a cross head ,43 that detachably engages in a socket 45:. also formed in the bottom of the seat. This cross head is tubular in form and is retained against accidental displacement by a pin 45 that passesftherethrough and through ,j e drill h d ng memb V l lw be noted Par i r y y f re to Fig. 2 that the-[above described mechanism provides a rotatable mounting for the base of the drillfandthat said drill 'can be l'fixed in any desired position therein. It

' will also bepbserved thattheaxis of rotation ofthedrill baseis eccentric to the axis of rotation of. the drill holding member17. consequentlyflji the parts namely, thedrill, 'the drill holding member .17 and the support engaging member 8 are relatively rotated, various adjustments can be secured. In order'to provide convenientmeans for rotatthe drill holding member, lugs 46 are preferably formed upon the same and may be engaged by,tl1e same wrench employed for operating the nuts 31 and a0. As illus- :trations of the' manner in which thedevice may be operated, to change the drill'bits or steeLall'that is necessary is to loosen the fi qnu a l1 n s ngt e mac tlei i by r iew ng, e, me be =.v quarter turn, while maintaining the drilling machine parallel to its original position. Qbviously this places the machine atone side oithe hole softhatthe used drill bit can be withdrawn without interference and a new one entered, after which a reverse operationwill bring the machine back toits operative position. When the drill steelis binding inthe side of the hole, a quick :alinement can be made by slackening the two nuts 31 and 40, and then by operating the drill piston slowly, the machine will adjust itself to bring the steel into correct alinement. It the column orshaft bar is set either too close or too far fromthe rock, a material adjustment CZIII 'bG secured by rowhat I. claim .a rom' the. spir ts! s cr ficing. ny eith r v ntag s. .aof the ent o Hayi. 1g fully describ d l'myilivgntionl I -n Wqi l ld desire t Secure by afient, i

In a erieenfth l harater set rth,

a suppor -en a g;- memb dr l. .h l

i s memb rs r atab y m unt d her a lamping bb tfxdispes d axi y: t hememkbe 'l -..op rating. lev r pivot di t sup- .po tr ngasing vli mb r a d onn ct d o the clamping'bo t r ov n'g t same a al y,

and means for placing strain uponthe lei/er.

2.,In a device oi the character set forth,

, a support clamp includinga chambered memher having an upstanding ring seat, a drill holding member rotatably mountedon said ring seatand having an axial socket, anaxially disposedclamping bolttliavinga headin said socket, said bolt extending into the chamber, an operating lever pivoted in the chamber and connected with the lower endof the ,clamp,bolt, said operating elever projecting from the member, and a nut on the projecting end oithelever having abearing against the member.

v 8. In a device of, the character setflforth,"

relatively rotatable support engaging and. I drill holding members, a bolt disposed axially of the members andhaving an adjustable clamping head (engaging one of the same, a lever pivoted to the bolt: andhaving a pivotal mounting onthe othermember, and meansv forgswingingthe leverto lefiect a clamping action between the head a d; the member engagedlthereby.

y 4:. In a device of, the character set forth, the combination with a support engaging clamp including an upper member having an internal chamber and an upstandingring seat, of a drill holding member rotatable on said seat, means in the, chamber and engaged with the drill holding member for ent'positions, said drill holding member having a recessed drill base receiving seat in its upper side disposed eccentricallyi to the ring seat, and means for rotatably mounting the clamping it against rotation and in ,difi'erbase of a drill in the latter seat and clamping it against rotation and in different, positions. 5.v In a device of the character set forth,

the combination with a support engaging member, of a tool-holding member rota- In testimony whereof I have hereunto set tably mounted thereon, a clamp bolt movmy hand in presence of two subscribing Wit- 10 able axially of the tool holding member, nesses.

means for moving th bolt, a clamping head adjustably threaded on the bolt and engag- FRED EMERSON ing the tool holding member, and a pin con- Witnesses:

nection between the bolt and head to nor- N. C. SHAW,

mally hold them against relative rotation. GUs'rAF C. EK.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents Washington, D G. 

